{
"manageEntity": {
"action": "Save",
"entityId": "506354115",
"entityType": "Track",
"nonce": "0x0b76238856e61b7946876744f9e8ef721b8ebf183f445e6029462d521a25d2cc",
"signature": "0x3d2df7d2775684a48293d220259517fc01f1023d65efb280959a9cf40ae3383d287d5b631891979461a9e37a3e8ef1add5e5cd8f7dae8737d69ba0654cf6eb3d1b",
"signer": "0x65b2681094e762CAD2349e6C1e2FbC8d54b9c046",
"userId": "11153747"
}
}